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Sonnax 28821-03K Servo Cover Kit GM Powerglide Transmission

Manufacturer

Picture for manufacturer Sonnax

Part Number

28821-03K
6 reviews
Sale Price

$78.66

1 left at this price

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Usually delivered within 2 days

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No Hassle Returns

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Fitment guaranteed

Fitment guaranteed

Product Details

The Sonnax 28821-03K servo cover kit is designed for GM Powerglide transmissions used in high-performance and drag racing applications. This lightweight billet aluminum cover replaces the heavy cast-iron OE cover, offering improved durability and performance under extreme conditions.

Key Features:

  • Lightweight billet aluminum construction replaces heavy cast-iron OE cover
  • Engineered to withstand line pressures over 200 psi
  • Prevents servo piston cracking and transmission failure under high-pressure conditions
  • Works with Sonnax servo piston kits 28821-01K or 28821-02K for complete system upgrade
  • Direct replacement design requires no case modifications

GM Powerglide transmissions used in drag racing generate significantly higher line pressure than the original equipment servo components can handle. This servo cover kit addresses this limitation by providing a stronger, lighter alternative that improves transmission performance and reliability in high-pressure racing environments.

Price was better that even Eastwood which makes what I purchased... pretty quick on shipping as well..

Quick and eady. Arrived one day later than first stated, but that was due to weather. Very happy with the whole process.

Shipping cost was too high for the length of time it took to be delivered.

no comment

Fast shipping! Received all my difficult to locate parts quickly. Super impressed. Thanks!

Easy to make a order

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